Forouzan: MCQ in Domain Name System

This is the MCQ in Domain Name System from book the Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in datacom, topic in Electronics Systems and Technologies (Communications Engineering) this will definitely help you before taking the Board Exam.

Begin and Good luck!

Choose the letter of the best answer in each questions.

1. A full domain name is a sequence of labels separated by ________.

A) semicolons

B) dots

C) colons

D) none of the above

View Answer:

Answer: Option B

Solution:

2. A ________ server loads all information from the primary server.

A) primary

B) secondary

C) zone

D) none of the above

View Answer:

Answer: Option B

Solution:

3. The first level in the generic domains section allows ______ possible labels.

A) 10

B) 12

C) 16

D) none of the above

View Answer:

Answer: Option D

Solution:

4. If a label is not terminated by a null string, it is called a __________.

A) PQDN

B) FQDN

C) SQDN

D) none of the above

View Answer:

Answer: Option A

Solution:

5. What a server is responsible for or has authority over is called a _________.

A) domain

B) label

C) zone

D) none of the above

View Answer:

Answer: Option C

Solution:

6. DNS can use the services of ________ using the well-known port 53.

A) UDP

B) TCP

C) either (a) or (b)

D) none of the above

View Answer:

Answer: Option C

Solution:

7. In the domain name chal.atc.fhda.edu, _______ is the most specific label.

A) chal

B) atc

C) fhda

D) none of the above

View Answer:

Answer: Option A

Solution:

8. The root of the DNS tree is _______.

A) a string of characters

B) a string of 63 characters

C) an empty string

D) none of the above

View Answer:

Answer: Option C

Solution:

9. When the secondary downloads information from the primary, it is called ______ transfer.

A) domain

B) zone

C) label

D) none of the above

View Answer:

Answer: Option B

Solution:

10. A _______ is a server whose zone consists of the whole tree.

A) domain server

B) zone server

C) root server

D) none of the above

View Answer:

Answer: Option C

Solution:

11. A pointer query involves the _______ domain.

A) inverse

B) reverse

C) root

D) none of the above

View Answer:

Answer: Option A

Solution:

12. Each node in the tree has a _______, which is a string with a maximum of ___ characters.

A) label; 127

B) name; 255

C) label; 63

D) none of the above

View Answer:

Answer: Option C

Solution:

13. To have a hierarchical name space, a ______________ was designed.

A) domain space

B) domain name

C) domain name space

D) none of the above

View Answer:

Answer: Option C

Solution:

14. The _______ domains define registered hosts according to their generic behavior.

A) generic

B) country

C) inverse

D) none of the above

View Answer:

Answer: Option A

Solution:

15. In a _________name space, each name is made of several parts.

A) flat

B) hierarchical

C) organized

D) none of the above

View Answer:

Answer: Option B

Solution:

16. In a _______ name space, a name is assigned to an address. A name in this space is a sequence of characters without structure.